Use simple chemical tests to differentiate between each member of the following pairs of compounds
(a) n - Propylalcohol and phenol
( b) Phenol and Benzoic acid

Explanation

To differentiate between the pairs of compounds, we can use simple chemical tests. Here’s a step-by-step solution for each pair:

### (a) Differentiating n-Propyl Alcohol and Phenol

1. **Test with Ferric Chloride (FeCl3)**:
- Take a small amount of phenol in a test tube.
- Add a few drops of ferric chloride solution to the phenol.
- Observe the color change.
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